Reporting that "mutant fish don't shine with sex appeal, Wee-Khee Seah, Zhiyuan Gong, and Daiqin Li of the National University of Singapore made aquariums where a normal or green fluorescent zebrafish female would be confronted with the choice between a normal and a glowing green male behind glass.

They found that both types of female spent more than 80% of their time with their noses glued to the glass of the unaltered males' compartments, with the green males jealously courting in vain." [More at Science Now.]